Before Installing Damper in the Duct
1. If damper has more than one blade, determine which
blade axle will be driven by the extended control
shaft. Always attach extended control shaft to a blade
axle which is directly connected to the main linkage
tiebar. DO NOT attach extended control shaft to a
crossover blade axle.
2. Cut hole approximately 1 in. (25mm) diameter in
duct where damper drive blade axle will be located.
Hole must provide clearance for enlarged portion of
extended control shaft.
After Damper is Installed in Duct
1. Push extended control shaft through hole in duct and
onto drive blade axle. Retainer clip should “click”
into the groove on the drive blade axle and hold shaft
into place. Standard control shaft location is the third
blade from the bottom on dampers with three or more
blades. Control shaft locations the first blade from the
bottom on dampers with one or two blades.
2. Install the stand off bracket with bearing over the
extended control shaft and screw bracket to the
duct. Make sure screws (provided by others) do not
interfere with damper linkage or blade movement.
Caution: Stand off bracket with bearing is needed to
support the extended control shaft. If not installed as
directed, the extended control shaft may not operate the
damper correctly.
Part Number 829038
316SS 1/2 in. Extension Pin Kit
No. Qty Description Part Number
- 4 Screws by others
1 1 Stand off bracket with ball bearing 687784
2 1 Extended Control Shaft (6 in.) 463921
3 1 Retaining Clip 454204
Crossover
Blade Axle
(Do not
attach
Control
Shaft here!)
Part Number 829039
316SS 1/2 in. Extension Pin Kit with Manual Quadrant
No. Qty Description Part Number
1 1 Standoff Bracket 687784
2 1 Extended Control Shaft (6 in.) 463921
3 1 Retaining Clip 454204
4 1 Manual Quadrant (
1
⁄2 in.) 464699
5 2 0.125 in. Rivet 416308
6 1 Label - Open/Close 452690
2
3
1
6
4
5
Part Number 879734
316SS 1/2 in. Extension Pin Kit
No. Qty Description Part Number
- 4 Screws by others
1 1 Stand off bracket with ball bearing 687784
2 1 Extended Control Shaft (12 in.) 879738
3 1 Retaining Clip 454204
2
SS Extension Pin Kit